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GCN Circulars

GCN Circulars are rapid bulletins submitted by and distributed to the community. See the documentation for help with subscribing to or submitting Circulars.

Search for Circulars by submitter, subject, or body text (e.g. 'Fermi GRB').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
Advanced Search

To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

19611 results found.

  1. GRB 060807: XRT Team refined analysis
  2. GRB 060807: Refined analysis of the Swift-BAT burst
  3. IPN triangulation of GRB060806 (long, exceptionally bright)
  4. GRB060807 - SDSS Pre-burst Observations
  5. GRB 060805B: X-ray Afterglow Detection, Spectral/Spatial/Temporal Properties
  6. GRB 060805B: Swift/UVOT Upper Limits
  7. GRB 060807: Swift detection of a burst
  8. GRB 060805: XRT Team Refined Analysis
  9. GRB 060805: Swift-BAT Refined Analysis
  10. GRB 060805: Swift/UVOT Upper Limits
  11. GRB 060805: KAIT observations
  12. GRB 060805 - SDSS Pre-Burst Observations
  13. GRB 060805: Swift detection of a burst
  14. GRB 060804: Swift UVOT observations
  15. GRB 060804: Swift-XRT Team Refined Analysis
  16. GRB 060804: Refined analysis of the Swift-BAT burst
  17. GRB 060804: Swift detection of a burst with a possible UVOT counterpart
  18. GRB 060728: Upper limits of the X-ray emission
  19. GRB 060801: WSRT Radio Observations
  20. GRB060801: Radio Observations
  21. GRB060801: Swift/UVOT Upper Limits
  22. GRB 060801: optical observations at Hanle and Calar Alto
  23. GRB 060801: Swift XRT refined analysis
  24. GRB 060801: Refined analysis of the Swift-BAT short hard burst
  25. GRB 060801: Swift detection of a short burst
  26. GRB060729: ROTSE-III Observations of the Slow Optical Decay
  27. Swift-BAT trigger 221873 is not a GRB or a Transient
  28. GRB 060729: Swift/UVOT Detections
  29. GRB 060729: Refined analysis of the Swift-BAT burst
  30. GRB 060729: Swift-XRT refined analysis
  31. GRB 060729: Swift/UVOT Observations
  32. GRB 060729: ROTSE-III Detection of Optical Counterpart
  33. GRB 060729: Swift detection of a burst with an UVOT optical counterpart
  34. GRB 060728: Swift/UVOT Upper Limits
  35. GRB 060728: Refined analysis of the Swift-BAT burst
  36. Swift/XRT preliminary analysis
  37. GRB 060728: Swift detection of a burst
  38. GRB060614 ATCA Radio Limits
  39. GRB 060714: Swift/UVOT Observations
  40. GRB 060522: VLA observation
  41. GRB 060719: Swift/UVOT Upper Limits
  42. GRB 060719: Refined analysis of the Swift-BAT burst
  43. GRB 060719: XRT refined analysis
  44. GRB 060719: optical limit by Pi-of-the-Sky
  45. GRB060719: FRAM early follow-up limit
  46. GRB 060719: Swift detection of a burst
  47. GRB 060717: Swift XRT refined analysis
  48. GRB 060714: Refined analysis of the Swift-BAT burst
  49. GRB060717: Swift/UVOT upper limits
  50. GRB 060717: Swift XRT refined position
  51. GRB 060717: Swift-BAT refined analysis
  52. GRB 060717: Swift detection of a burst
  53. GRB 060714: Swift XRT refined analysis
  54. GRB060708: MARGE low resolution spectrum observations
  55. Swift-BAT trigger 219136 is not a GRB
  56. GRB060707 possible optical confirmation
  57. Swift trigger 219136 is probably not a GRB
  58. GRB 060714: Swift detection of a burst with an UVOT optical afterglow
  59. GRB 060712: XRT refined analysis
  60. GRB 060712: Swift/UVOT Upper Limits
  61. GRB 060712: XRT refined position
  62. GRB 060712: Refined analysis of the Swift-BAT burst
  63. GRB 060712: Swift detection of a burst
  64. GRB 060708: Swift-XRT refined analysis
  65. GCN 060708: Swift-UVOT Observations
  66. GRB 060708: Refined analysis of the Swift-BAT burst
  67. GCN 060707: Swift-UVOT observations
  68. GRB 060707: Swift-XRT refined analysis
  69. GRB 060708: Swift detection of a burst with an UVOT countpart
  70. GRB060707 possible optical confirmation
  71. GRB 060707: BOOTES-IR optical afterglow candidate
  72. GRB 060707: Refined analysis of the Swift-BAT burst
  73. GRB 060707: BOOTES-IR optical observation
  74. GRB060614: Possible SN Bump in UVOT U Band Light Curve
  75. GRB 060707: Swift detection of a burst
  76. GRB 060614: Detection of a Possible, Late-Time Rebrightening
  77. Swift-BAT trigger 215279 is not a GRB
  78. Trigger 215279: Swift detection of a possible burst (GRB 060619)
  79. GRB 060614: pseudo-z from spectral parameters of the prompt emission
  80. Konus-Wind observation of GRB 060614
  81. The Unusually Long-Lived Afterglow of GRB 060614
  82. GRB 060605, optical observations
  83. GRB060614: SSO 1m observations
  84. GRB060614: Watcher observation
  85. GRB 060614: Swift-BAT refined analysis
  86. GRB 060614: Swift/UVOT Observations
  87. GRB060614: Swift-XRT refined analysis
  88. GRB 060604, optical observations
  89. GRB 060614: Swift detection of a burst with a bright optical and X-ray counterpart
  90. GRB 060602A: Swift/XRT analysis
  91. BAT Trigger #214277 is SGR 1900+14
  92. GRB 060610: KAIT observations
  93. GRB 060607: RTT150 optical observations
  94. GRB 070706B: Watcher upper limit
  95. GRB 060607B: Swift-BAT Refined Analysis
  96. GRB060602A: Swift/UVOT upper limits
  97. GRB 060607B: Swift detection of a burst
  98. GCN 060607: Swift-UVOT obswervations.
  99. GRB 060607: Swift-BAT Refined Analysis
  100. GRB 060607: optical limit by "Pi of the Sky"

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